A user who can open a fork pull request can place workflow content with a shared run-level concurrency group into a Gitea Actions run that is awaiting approval. When a later run in that group cancels the blocked job, the run becomes terminal while still marked as needing approval. If a maintainer later approves the run, Gitea passed the already-cancelled job back through concurrency preparation, set it to waiting, and made it claimable by a matching runner, executing fork-controlled workflow code. Exploitation requires the maintainer's later approval action, Actions to be enabled, and a runner that accepts the repository's jobs.
History

Tue, 13 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*

Wed, 07 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 06 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea
Vendors & Products Gitea
Gitea gitea

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Description A user who can open a fork pull request can place workflow content with a shared run-level concurrency group into a Gitea Actions run that is awaiting approval. When a later run in that group cancels the blocked job, the run becomes terminal while still marked as needing approval. If a maintainer later approves the run, Gitea passed the already-cancelled job back through concurrency preparation, set it to waiting, and made it claimable by a matching runner, executing fork-controlled workflow code. Exploitation requires the maintainer's later approval action, Actions to be enabled, and a runner that accepts the repository's jobs.
Title Gitea fork workflow job revival through later approval
Weaknesses CWE-841
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Gitea

Published: 2026-10-06T19:23:03.330Z

Updated: 2026-10-07T20:19:46.339Z

Reserved: 2026-10-04T21:57:35.546Z

Link: CVE-2026-104626

cve-icon Vulnrichment

Updated: 2026-10-07T20:19:36.989Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-06T20:17:15.120

Modified: 2026-10-13T17:24:53.250

Link: CVE-2026-104626

cve-icon Redhat

No data.